And Antifoggant Or Color Stabilizer Patents (Class 430/551)
  • Patent number: 5965322
    Abstract: There is disclosed a silver halide color photographic light-sensitive material that contains, in photographic constitutional layers on a support, a hydrazine-series reducing agent for color formation, and a phenol-series magenta coupler having an acylamino group at the 5-position, and/or a naphthol-series cyan coupler having an amido group at the 5-position. The light-sensitive material makes low-replenishment and low-discharge processing possible, and exhibits good color reproducibility and good color-forming property.
    Type: Grant
    Filed: February 18, 1997
    Date of Patent: October 12, 1999
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Toshiyuki Makuta, Koki Nakamura, Kiyoshi Takeuchi
  • Patent number: 5962208
    Abstract: A silver halide color photographic material comprises at least one silver halide emulsion layer on a reflex support silver halide grains containing at least 90 mol % silver chloride and having a silver bromide-rich region in the vicinity of at least one grain corner, but having an average silver bromide content of 15 mol % or less at the grain surface, (ii) at least one yellow coupler represented by the following general formula (I); and (iii) at least one compound represented by the following general formula (II): ##STR1## wherein R.sub.1 represents an aryl group or a tertiary alkyl group; R.sub.2 represents a fluorine atom, an alkyl group, an aryl group, an alkoxy group, an aryloxy group, a dialkylamino group, an alkylthio group, or an arylthio group; R.sub.
    Type: Grant
    Filed: May 28, 1997
    Date of Patent: October 5, 1999
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Kazunori Hasebe
  • Patent number: 5958663
    Abstract: The invention relates to a colour-photographic recording material which comprises a magenta coupler and, as stabilizer, at least one compound of the formula ##STR1## where the radicals are as defined in claim 1, and to the novel stabilizers.
    Type: Grant
    Filed: March 18, 1998
    Date of Patent: September 28, 1999
    Assignee: Ciba Specialty Chemicals Corporation
    Inventor: Suruliappa Jeganathan
  • Patent number: 5958661
    Abstract: The invention relates to a color photographic element comprising a red light sensitive layer comprising a cyan dye forming coupler, a green light sensitive layer comprising a magenta dye forming coupler, a blue light sensitive layer comprising a yellow dye forming coupler, wherein said magenta dye forming coupler comprises ##STR1## wherein R.sub.a and R.sub.b independently represent H or a substituent; X is hydrogen or a coupling-off group; and Z.sub.a, Z.sub.b, and Z.sub.c are independently a substituted methine group, .dbd.N--, .dbd.C--, or --NH--, provided that one of either the Z.sub.a --Z.sub.b bond or the Z.sub.b --Z.sub.c bond is a double bond and the other is a single bond, and when the Z.sub.b --Z.sub.c bond is a carbon--carbon double bond, it may form part of an aromatic ring, and at least one of Z.sub.a, Z.sub.b, and Z.sub.c represents a methine group connected to the group R.sub.
    Type: Grant
    Filed: July 15, 1997
    Date of Patent: September 28, 1999
    Assignee: Eastman Kodak Company
    Inventors: John B. Rieger, Alphonse D. Camp, Michael R. Roberts, Thomas A. Chuhta
  • Patent number: 5948601
    Abstract: The invention relates to a photographic element comprising an emulsion layer comprising a cyan dye forming coupler, an emulsion layer comprising a magenta dye forming coupler, an emulsion layer comprising a yellow dye forming coupler wherein said magenta coupler comprises ##STR1## wherein R.sub.a and R.sub.b independently represent H or a substituent; X is hydrogen or a coupling-off group; and Z.sub.a, Z.sub.b, and Z.sub.c are independently a substituted methine group, .dbd.N--, .dbd.C--, or --NH--, provided that one of either the Z.sub.a --Z.sub.b bond or the Z.sub.b --Z.sub.c bond is a double bond and the other is a single bond, and when the Z.sub.4 --Z.sub.c bond is a carbon-carbon double bond, it may form part of an aromatic ring, and at least one of Z.sub.a, Z.sub.b, and Z.sub.c represents a methine group connected to the group R.sub.
    Type: Grant
    Filed: January 31, 1997
    Date of Patent: September 7, 1999
    Assignee: Eastman Kodak Company
    Inventor: John B. Rieger
  • Patent number: 5945268
    Abstract: Disclosed is a silver halide color photographic light sensitive material comprising a coupler represented by the following formula (I):formula (I) ##STR1## wherein Cp represents a coupler moiety; L represents a divalent linkage group; J represents --CO-- or --SO.sub.2 --; R.sub.1, R.sub.2, R.sub.3 and R.sub.4 independently represent a hydrogen atom, an alkyl group or an aryl group, provided that one of R.sub.3 and R.sub.4 is a hydrogen atom; R.sub.5 represents a substituent; and n represents 0 or 1.
    Type: Grant
    Filed: August 21, 1997
    Date of Patent: August 31, 1999
    Assignee: Konica Corporation
    Inventors: Koji Daifuku, Hiroyuki Yasukawa, Kohichi Takabe, Ryohei Iwamoto, Satoru Ikesu
  • Patent number: 5945267
    Abstract: A silver halide color photographic light sensitive material is disclosed, comprising a support having thereon photographic component layers, at least one of the component layers containing a coupler represented by the following formula, and the photographic material having an overall silver potential of 50 to 120 mV.
    Type: Grant
    Filed: July 2, 1997
    Date of Patent: August 31, 1999
    Assignee: Konica Corporation
    Inventor: Katsuya Yabuuchi
  • Patent number: 5935773
    Abstract: A colour photographic silver halide material with a support, at last one silver halide emulsion layer containing at least one yellow coupler and at least one silver halide emulsion layer containing a cyan coupler applied thereon, in which material the silver halide emulsion layer, of which there is at least one, containing at least one yellow coupler and/or the silver halide emulsion layer, of which there is at least one, containing at least one cyan coupler contains a compound of the formula (I) ##STR1## in which R.sub.1, R.sub.2, R.sub.3 mean alkyl, alkenyl or acyl andn means 6, 7 or 8,is distinguished by improved stability of the image dyes produced by processing.
    Type: Grant
    Filed: April 29, 1996
    Date of Patent: August 10, 1999
    Assignee: Agfa-Gevaert AG
    Inventors: Jorg Hagemann, Gunter Helling
  • Patent number: 5932404
    Abstract: The present invention is a silver halide photographic material including at least one layer which contains; a polymer comprising as constituent components thereof a repeating unit having a photographically useful group and at least one repeating unit having an imidazole group; and a compound having at least one functional group which reacts with an imidazole group and at least one other functional group capable of reacting with an imidazole group and a primary amine group, the amount of the compound being sufficient to insure adequate fixation of said polymer.
    Type: Grant
    Filed: December 18, 1996
    Date of Patent: August 3, 1999
    Assignee: Eastman Kodak Company
    Inventors: Tienteh Chen, Hwei-ling Yau, Dorothy T. Java
  • Patent number: 5928850
    Abstract: A silver halide photographic light-sensitive material is disclosed. The light-sensitive material comprises a dispersion material which is obtained by emulsifying a mixture of a yellow coupler represented by the formula and a polymer compound that is insoluble in water and soluble in an organic solvent.
    Type: Grant
    Filed: February 18, 1997
    Date of Patent: July 27, 1999
    Assignee: Konica Corporation
    Inventors: Kazuhiro Murai, Shigeo Tanaka, Kunimasa Hiyama
  • Patent number: 5925503
    Abstract: The invention provides a photographic element comprising a silver halide emulsion layer having associated therewith a dye-forming coupler represented by formula I: ##STR1## wherein X is hydrogen or a coupling-off group; andR' is a tertiary alkyl group and R" represents the group ##STR2## in which R.sup.1, R.sup.2, and R.sup.3 are independently selected alkyl groups, provided that any two of R.sup.1, R.sup.2, and R.sup.3 may join to form a ring;R.sup.4 is hydrogen or a substituent, provided that R.sup.3 and R.sup.4 may join to form a ring when R.sup.4 is a substituent; andW is a substituent selected from the group consisting of --C(O)R.sup.5, --SO.sub.2 R.sup.5, and --P(O)(OR.sup.6).sub.2 in which R.sup.5 is selected from the group consisting of alkyl, aryl, alkoxy, aryloxy, alkylamino, and arylamino groups and R.sup.6 is selected from the group consisting of alkyl and aryl groups.The element exhibits improved magenta dye light stability.
    Type: Grant
    Filed: January 15, 1997
    Date of Patent: July 20, 1999
    Assignee: Eastman Kodak Company
    Inventors: John W. Harder, Paul A. Burns, Paul P. Spara
  • Patent number: 5891613
    Abstract: A silver halide light sensitive photographic element is disclosed comprising a support bearing at least one yellow image forming hydrophilic colloid layer comprising yellow image dye forming couplers and a substituted bisphenol light stabilizer compound which has a melting point of greater than 20.degree. C., wherein the yellow image forming layer contains less than 10 wt % high boiling permanent solvent relative to the total amount of yellow coupler in the layer. In preferred embodiments of the invention, the yellow image forming layer is substantially free of high boiling permanent solvent. Light stability for yellow image dyes formed in an exposed and processed photographic element may be significantly improved where the yellow dyes are formed in a photographic layer which is substantially free of organic solvents, or which contains only a very low level of organic solvents, in combination with a substituted bisphenol light stabilizer compound which is a solid at room temperature.
    Type: Grant
    Filed: August 22, 1997
    Date of Patent: April 6, 1999
    Assignee: Eastman Kodak Company
    Inventors: Paul L. Zengerle, Gary N. Barber
  • Patent number: 5888719
    Abstract: A color photographic material with a support and at least one spectrally sensitised silver halide emulsion layer containing at least one color coupler, which layer contains a polymer with repeat units of the structure I ##STR1## in which R.sub.1, R.sub.2, R.sub.3 are identical or different and mean hydrogen, alkyl or halogen,L means a chemical bond or a linking member andX means a group which reacts with NH.sub.2 --, COOH-- or OH-- groups in an addition or condensation reaction,in dispersed form with an average particle size of <300 nm, is distinguished by improved "dark fading" stability.
    Type: Grant
    Filed: July 29, 1996
    Date of Patent: March 30, 1999
    Assignee: AGFA-Gevaert AG
    Inventor: Gunter Helling
  • Patent number: 5879870
    Abstract: Improvements in post process Dmin are provided in a photographic element that has a preferred coupler, hardener, and permanent solvent. The coupler of the element comprises between about 20 and 40 percent by weight of the coupler and oil phase components and the element further comprises chromanol stabilizer.
    Type: Grant
    Filed: October 21, 1996
    Date of Patent: March 9, 1999
    Assignee: Eastman Kodak Company
    Inventors: Thomas A. Rosiek, Alberto M. Martinez, Walter H. Isaac
  • Patent number: 5866313
    Abstract: A silver halide photographic light-sensitive material having at least one light-sensitive silver halide emulsion layer, on a support, and comprising a reducing agent for color formation of carbamoyl-substituted hydrazine, a dye-forming coupler and at least one photographic stabilizer selected from five groups of compounds.
    Type: Grant
    Filed: November 29, 1996
    Date of Patent: February 2, 1999
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Katsumi Hirano
  • Patent number: 5856072
    Abstract: A color photographic element which comprises a light sensitive silver halide emulsion layer and a non-light sensitive interlayer containing a ballasted 5-carbamoyl-1,3-dihydroxybenzene compound. The element exhibits an improved ability to prevent oxidized developer from diffusing away from the imaging layer in which it formed and into other color records where it can form the wrong color dye.
    Type: Grant
    Filed: June 2, 1997
    Date of Patent: January 5, 1999
    Assignee: Eastman Kodak Company
    Inventors: Ronald E. Leone, Stephen P. Singer
  • Patent number: 5851746
    Abstract: A photographic element comprises an ultraviolet ray absorbing polyester support bearing a light-sensitive silver halide photographic emulsion layer, the support having adjacent thereto one or more contiguous non imaging layers between the support and the closest silver halide photographic emulsion layer said one or more contiguous layers containing a combined gelatin laydown of 2.3 g/m.sup.2 or less.
    Type: Grant
    Filed: November 26, 1997
    Date of Patent: December 22, 1998
    Assignee: Eastman Kodak Company
    Inventors: John Brian Rieger, Drake Matthew Michno
  • Patent number: 5846698
    Abstract: A silver halide color photographic material having on a support at least one light-sensitive silver halide emulsion layer, wherein the color photographic material contains a nondiffusing coupler represented by formula (I):Cp-O--C(.dbd.O)--N(R.sub.1)--Ar--X (I)wherein Cp represents a coupler residue capable of releasing --O--C(.dbd.O)--N(R.sub.1)--Ar--X by causing a coupling reaction with an oxidized color developing agent; Ar represents an arylene group; X represents an amino group, an alkoxy group, or a hydroxy group; and R.sub.1 represents a hydrogen atom or a substituent, and a method for processing the photographic material which comprises exposing, developing and bleaching the photographic material, wherein the replenishing amount for the developer is not more than 600 ml per square meter of the photographic material.
    Type: Grant
    Filed: January 30, 1997
    Date of Patent: December 8, 1998
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Masashi Ogiyama, Toshihiro Nishikawa, Seiji Ichijima
  • Patent number: 5834172
    Abstract: A photographic coating composition comprising an aqueous medium containing a hydrophilic colloid and having dispersed therein solid particles of a yellow filter dye also contains a oxidized developer scavenger of formula III ##STR1## wherein x.sup.1 =hydrogen or a process cleavable group;R.sup.14 =an electron withdrawing and aqueous solubilizing group;R.sup.15 =a substituent group;R.sup.16 =a ballasting group;R.sup.17 =a substituent group;i=1, 2, 3, or 4; andj=1, 2, 3, or 4.The coating composition is stable with regard to crystal growth of the dispersed solid particles of filter dye even when held at coating temperatures (about 45.degree. C.) for several hours.
    Type: Grant
    Filed: February 23, 1996
    Date of Patent: November 10, 1998
    Assignee: Eastman Kodak Company
    Inventors: Paul Leo Zengerle, John Victor Nelson, Mary Christine Brick
  • Patent number: 5804359
    Abstract: Photographic elements are disclosed in which exposure to at least one portion of the spectrum is recorded by a silver halide emulsion layer unit as an image having its optical density provided by silver. The layer unit is comprised of a plurality of radiation sensitive silver halide emulsion layers that are responsive to the same region of the spectrum, but differ in sensitivity, including a non-wandering silver halide reducing agent. A molar ratio of reducing agent to silver halide in one of the emulsion layers is less than that stoichiometrically required for complete silver halide reduction to silver. A higher molar ratio of reducing agent to silver halide is contained in a remaining of the two emulsion layers.
    Type: Grant
    Filed: May 17, 1996
    Date of Patent: September 8, 1998
    Assignee: Eastman Kodak Company
    Inventor: Michael John Simons
  • Patent number: 5800971
    Abstract: The invention provides a multilayer color negative photographic element comprising a support, at least one light-sensitive silver halide emulsion layer sensitive to each of the blue, green and red regions of the visible spectrum, one or more yellow or orange-yellow cyano benzoxazolyl or cyano benzothiazolyl arylidene type methine filter or density correction dyes of structure I, below, codispersed with one or more hydroquinone, catechol or sulfonamidophenol reducing agents, ##STR1## wherein: R.sub.1 is hydrogen or an alkyl group;R.sub.2 is an alkyl group or an aryl group;R.sub.3 is hydrogen, a halogen, an alkyl group, an alkoxy group or an aryloxy group;R.sub.4 is hydrogen or an alkyl group;R.sub.5 is hydrogen or an alkyl group;R.sub.6 is hydrogen or an alkyl group;X is oxygen or sulfur;each R.sub.
    Type: Grant
    Filed: January 5, 1996
    Date of Patent: September 1, 1998
    Assignee: Eastman Kodak Company
    Inventors: Paul Leo Zengerle, Paul Barrett Merkel
  • Patent number: 5763144
    Abstract: The invention relates to a color-photographic recording material which comprises a magenta coupler and, as stabilizer, at least one compound of formula (Ia), (Ib) or (II), where the radicals are as defined in claim 1, and to the novel stabilizers.
    Type: Grant
    Filed: August 5, 1996
    Date of Patent: June 9, 1998
    Assignee: Ciba Specialty Chemicals Corporation
    Inventor: Suruliappa Jeganathan
  • Patent number: 5756274
    Abstract: A silver halide color photographic material is described, comprising a support having provided thereon at least one blue-sensitive silver halide emulsion layer, at least one green-sensitive silver halide emulsion layer, and at least on red-sensitive silver halide emulsion layer, wherein at least one layer of the at least one red-sensitive silver halide emulsion layer contains at least one of the cyan couplers represented by formula (1), and at least one layer contains at least one compound selected from the compounds represented by the following formula (2) and the compounds which react with the oxidized product of an aromatic primary amine color developing agent but substantially do not form color images: ##STR1## wherein the variables are defined herein.
    Type: Grant
    Filed: July 25, 1996
    Date of Patent: May 26, 1998
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Naoto Matsuda, Takayuki Ito, Naoki Saito
  • Patent number: 5736299
    Abstract: A silver halide color photographic material is disclosed, wherein it comprises a support having thereon one or more constituent layers including at least one silver halide emulsion layer, wherein at least one hydrophilic colloid layer of said constituent layers contains a coupler represented by the following formula (M) or formula (I) and at least one hydrophilic colloid layer of said constituent layers contains a compound represented by the following formula (H): ##STR1##
    Type: Grant
    Filed: January 23, 1996
    Date of Patent: April 7, 1998
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Toshiyuki Watanabe, Hiroshi Fukuzawa, Michio Ono, Takashi Nakamura
  • Patent number: 5736303
    Abstract: The invention relates to a photographic element comprising at least one layer comprising at least one substituted hydroquinone and adjacent said at least one layer comprising substituted hydroquinone, at least one layer comprising coupler Magenta-1 ##STR1## wherein R.sub.a and R.sub.b independently represent H or a substituent; R.sub.c is a substituent; X is hydrogen or a coupling-off group; and Z.sub.a, Z.sub.b, and Z.sub.c are independently a substituted methine group, .dbd.N--, .dbd.C--, or --NH--, provided that one of either the Z.sub.a --Z.sub.b bond or the Z.sub.b --Z.sub.c bond is a double bond and the other is a single bond, and when the Z.sub.b --Z.sub.c bond is a carbon-carbon double bond, it may form part of an aromatic ring, and at least one of Z.sub.a, Z.sub.b, and Z.sub.c represents a methine group connected to the group R.sub.b, wherein the ratio of gelatin to organic component in said layer comprising magenta 1 is greater than 1.
    Type: Grant
    Filed: June 7, 1996
    Date of Patent: April 7, 1998
    Assignee: Eastman Kodak Company
    Inventors: Gary John McSweeney, Alphonse Dominic Camp, Vincent James Flow
  • Patent number: 5731138
    Abstract: A color photographic material which contains in at least one layer a stabilizer of the formula (I) ##STR1## in which R.sub.1 means H, alkyl, aryl or acyl;R.sub.2 means --OR.sub.1, --COOH, alkyl, aryl, dialkylamino, acylamino, sulphonamido, acyl or sulphonyl;R.sub.3, R.sub.4, R.sub.5 and R.sub.6 independently of one another mean H, halogen or a residue as R.sub.2 or two adjacent residues --OR.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 may together complete a 5- to 8-membered ring, and a polymer insoluble in water as pH 5 and soluble at pH 11 with an acid value of 30 to 300 and a Tg of.ltoreq.40.degree. C. of the formula (II) ##STR2## in which R.sub.7 mutually independently mean hydrogen, C.sub.1 -C.sub.4 alkyl or CH.sub.2 --COOH,R.sub.8 means alkyl, aryl or aralkyla means 80 to 95 mol. % andb means 5 to 20 mol. %, is distinguished by improved stability of the image dyes.
    Type: Grant
    Filed: January 26, 1996
    Date of Patent: March 24, 1998
    Assignee: Agfa-Gevaert AG
    Inventors: Gunter Helling, Beate Weber, Markus Geiger
  • Patent number: 5728514
    Abstract: A silver halide color photographic material is disclosed, which comprises a support having thereon at least one yellow coloring light-sensitive silver halide emulsion layer, at least one magenta coloring light-sensitive silver halide emulsion layer, and at least one cyan coloring light-sensitive silver halide emulsion layer, wherein at least one of said yellow coloring light-sensitive silver halide emulsion layer contains at least one dye-forming coupler represented by formula (Y) and at least one non-coloring compound represented by formula (A) or (B): ##STR1## with the substituents as defined herein the specification.
    Type: Grant
    Filed: June 17, 1997
    Date of Patent: March 17, 1998
    Assignee: Fuji Photo Film Co, Ltd.
    Inventors: Yasuhiro Yoshioka, Hiroo Takizawa, Masakazu Morigaki
  • Patent number: 5726004
    Abstract: A photographic material having at least one photosensitive silver halide emulsion layer and at least one non-photosensitive layer on a support, which material contains at least one compound of the formula (I) in at least one of the layers, ##STR1## in which R.sub.1 to R.sub.5, L, m and n have the meaning stated in the specification and PUG means a photographically active group, may be produced in thinner layers.
    Type: Grant
    Filed: September 18, 1996
    Date of Patent: March 10, 1998
    Assignee: Agfa-Gevaert
    Inventors: Beate Weber, Jorg Hagemann
  • Patent number: 5723617
    Abstract: A series of novel pyrrolo?2,1-a!isoquinoline dyes has been prepared using readily available starting materials via a simple synthetic pathway. These dyes have narrow absorption bands in the range of 500-900 nm. Those that absorb in the near-infrared region (700-1400 nm) lack significant absorption in the 300-400 nm ultraviolet region of the spectrum; this is an advantage for use in an applications such as imaging setting film. In addition, the greater thermal and chemical stability of these dyes in comparison to their indolizine analogues should be valuable in many applications.
    Type: Grant
    Filed: December 21, 1995
    Date of Patent: March 3, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Gregory D. Cuny
  • Patent number: 5719007
    Abstract: A silver halide color photographic material is described, which comprises a support having thereon at least one blue-sensitive silver halide emulsion layer, at least one green-sensitive silver halide emulsion layer, at least one red-sensitive silver halide emulsion layer and at least one light-insensitive layer, wherein one or more of the above layers contains at least one compound represented by formula (A-I), (A-II), (A-III), (A-IV) or (A-V) and one or more of the above layers contains at least one compound represented by formula (H): ##STR1##
    Type: Grant
    Filed: January 29, 1996
    Date of Patent: February 17, 1998
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Mamoru Sakurazawa, Hisashi Mikoshiba, Masakazu Morigaki
  • Patent number: 5716764
    Abstract: The invention provides a multilayer silver halide color negative photographic element comprising in the same layer a cyan dye of formula (I) and a ballasted stabilizer compound of formula (II), where the respective formulas are: ##STR1## andB--L--A--R (II)wherein:the substiuents are as defined herein the specification.
    Type: Grant
    Filed: April 10, 1996
    Date of Patent: February 10, 1998
    Assignee: Eastman Kodak Company
    Inventors: John Brian Rieger, Charles Leo Bauer
  • Patent number: 5705326
    Abstract: There is disclosed a silver halide color photographic material and a method for forming a color image using the photographic material. The photographic material comprises a reflective support made up of a base and two or more waterresisting resin covering layers which contain a white pigment and a silver halide emulsion layer containing a yellow coupler represented by formula (I), (II), or (III) and preferably further containing a compound represented by formula (IV), (V), (VI), (VII), or (VIII), each of which formula is defined in claim, on the reflective support.
    Type: Grant
    Filed: May 6, 1994
    Date of Patent: January 6, 1998
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Kiyoshi Kawai
  • Patent number: 5702877
    Abstract: A colour photographic silver halide material with a support, at least one silver halide emulsion layer and at least one non-light sensitive layer applied thereto, wherein the silver halide emulsion layer contains at least one colour coupler, and wherein the silver halide emulsion layer or the non-light sensitive layer contains a compound of the formula (I) ##STR1## in which R.sub.1, R.sub.2 and R.sub.3 mean hydrogen or an organic residue andn means 0 or an integer from 1 to 4 orR.sub.1 and R.sub.2 together, R.sub.1 and an adjacent residue R.sub.3 together or two adjacent residues R.sub.3 together form a carbocyclic or heterocyclic ring with 5 to 7 ring atoms orR.sub.1, R.sub.2 or R.sub.3 mean a bridging member by means of which two compounds of the formula (I) are attached together orR.sub.1, R.sub.2 or R.sub.3 are attached to a polymer via a bridging member,wherein at least one of the substituents R.sub.1, R.sub.2 and R.sub.3 is an organic residue,is distinguished by improved grain.
    Type: Grant
    Filed: February 26, 1996
    Date of Patent: December 30, 1997
    Assignee: Agfa-Gevaert AG
    Inventors: Heinrich Odenwalder, Hans Langen, Uwe Dahlhaus, Heinz-Dieter Schutz
  • Patent number: 5698383
    Abstract: This invention provides a color silver halide photographic element comprising a support having situated thereon a red light-sensitive, cyan dye-forming unit; a green light-sensitive, magenta dye-forming unit; and a blue light-sensitive, yellow dye-forming unit. The photographic element further comprising a first layer and a second layer, the second layer being a layer which provides a site of development for solution physical development.
    Type: Grant
    Filed: December 28, 1995
    Date of Patent: December 16, 1997
    Assignee: Eastman Kodak Company
    Inventors: Spencer Alan Pugh, Sang Hyung Kim
  • Patent number: 5695921
    Abstract: A silver halide photographic element comprising a magenta dye forming coupler and a compound of formula (A) associated with the coupler: ##STR1## wherein: each R.sup.20 independently represents an alkyl, alkenyl, or heteroaryl group;Ar represents an aryl or heteroaryl group. Photographic elements of the present invention exhibit low thermal pinking, while still having good image stability and hue.
    Type: Grant
    Filed: April 4, 1996
    Date of Patent: December 9, 1997
    Assignee: Eastman Kodak Company
    Inventors: Sundaram Krishnamurthy, Paul Patrick Spara, Rakesh Jain
  • Patent number: 5691124
    Abstract: This invention provides color silver halide photographic element comprising a red light-sensitive, cyan dye-forming unit comprising a photosensitive silver halide emulsion layer and an image dye-forming coupler; a green light-sensitive, magenta dye-forming unit comprising a photosensitive silver halide emulsion layer and an image dye-forming coupler; and a blue light-sensitive, yellow dye-forming unit comprising a photosensitive silver halide emulsion layer and an image dye-forming coupler; the photographic element further comprising a first layer and a second layer, the second layer being a layer which provides a site of development for solution physical development; wherein at least one of the dye-forming units comprises two or more emulsion layers spectrally sensitized to the same region of the visible spectrum, but exhibiting different photographic sensitivities and wherein the first layer is positioned adjacent to the layer containing the slowest emulsion of said dye-forming unit and between the layer co
    Type: Grant
    Filed: December 28, 1995
    Date of Patent: November 25, 1997
    Assignee: Eastman Kodak Company
    Inventors: Sang Hyung Kim, Spencer Alan Pugh
  • Patent number: 5683853
    Abstract: A silver halide color photographic material is disclosed, which comprises a support having thereon at least one silver halide emulsion layer, wherein the emulsion layer contains at least one silver halide emulsion layer, wherein said emulsion layer contains at least one dye-forming coupler and at least one reducing agent for coloring represented by the following formula (I), and further the film pH of said silver halide color photographic material is 6.5 or less:R.sup.11 --NH--NH--X--R.sup.12 (I)wherein R.sup.11 represents an aryl group, or a heterocyclic group; R.sup.12 represents an alkyl group, an alkenyl group, an alkynyl group, an aryl group or a heterocyclic group; X represents --SO.sub.2 --, --CO--, --COCO--, --CO--O--, --CO--N(R.sup.13)--, --COCO--O--, --COCO--N(R.sup.13)-- or --SO.sub.2 --N(R.sup.13)--; where R.sup.13 represents a hydrogen atom or a group described for R.sup.12.
    Type: Grant
    Filed: February 21, 1996
    Date of Patent: November 4, 1997
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Toshiyuki Makuta, Koki Nakamura, Kiyoshi Takeuchi
  • Patent number: 5667951
    Abstract: A silver halide color photographic material is disclosed which comprises a support having provided thereon at least one photographic layer containing: (i) at least one yellow dye-forming coupler represented by formula (I); and (ii) a compound represented by formula (IV), or an oligomer or polymer comprising a moiety of the compound represented by formula (IV): ##STR1## wherein R.sub.1 and R.sub.2 each independently represents an aliphatic oxy group, an aliphatic group, an aryloxy group, an aryl group, an aliphatic amino group, or an anilino group; R.sub.3 represents a hydrogen atom, an aliphatic group, or an aryl group; and Q represents a dye-forming coupler residue capable of forming a yellow dye by undergoing a coupling reaction with an oxidation product of a developing agent;R.sub.31 CON(R.sub.32)R.sub.33 (IV)wherein R.sub.31, R.sub.32, and R.sub.33 each independently represents a hydrogen atom, an aliphatic group, or an aryl group; provided that the sum of the carbon atom numbers of R.sub.31, R.sub.
    Type: Grant
    Filed: March 5, 1996
    Date of Patent: September 16, 1997
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hiroo Takizawa, Takeshi Nakamine, Yasuhiro Yoshioka, Masakazu Morigaki
  • Patent number: 5643711
    Abstract: A silver halide photographic light-sensitive material having at least one light-sensitive silver halide emulsion layer on a support is disclosed. The light-sensitive silver halide emulsion layer contains tabular silver halide grains having an average aspect ratio of 2 or more and contains a compound represented by the following formula (I) and/or the oxidized product thereof:X.sub.1 --A--X.sub.2 Formula (I)wherein X.sub.1 and X.sub.2 each represent OR.sub.1 or ##STR1## wherein R.sub.1 represents a hydrogen atom or a group capable of being converted to a hydrogen atom upon hydrolysis, and R.sub.2 and R.sub.3 each represent hydrogen, alkyl, aryl, heterocyclic, heterocyclic sulfonyl, heterocyclic carbonyl, sulfamoyl, or carbamoyl, A represents arylene, and at least one of the groups representative of X.sub.1, X.sub.2, and A is substituted by a group which accelerates adsorption to a silver halide grain.
    Type: Grant
    Filed: January 10, 1994
    Date of Patent: July 1, 1997
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shunji Takada, Yoichi Suga, Hiroyuki Kawamoto
  • Patent number: 5627017
    Abstract: Low melting point epoxy scavenger compounds are disclosed which contain a pH dependent ionizable group to facilitate migration of the scavenger from an adjacent scavenger layer (that does not contain any coupler) to an imaging layer (containing coupler and emulsion) of a photographic element at the pH of development. One aspect of the invention comprises a process of forming an aqueous dispersion of an epoxy compound of the structural formula SI: ##STR1## wherein: R is H, an alkyl group, or an aryl group; L.sub.1 is an alkyl group or an aryl group; L.sub.2 is --O--, --CO--, --S--, --SO.sub.2 --, --PO.sub.2 --, --CO.sub.2 --, --NHCO-- or --NHSO.sub.2 --, wherein L.sub.2 may be orientated in either direction; L.sub.3 is an alkyl group; m is 0 or 1; p is 0 or 1; and X is ##STR2## wherein R' is H or an alkyl or aryl group, with the proviso that where L.sub.2 comprises an ionizable group, X may also be an alkyl group or an aryl group; wherein the compound has a melting point of less than about 50.degree. C.
    Type: Grant
    Filed: April 25, 1995
    Date of Patent: May 6, 1997
    Assignee: Eastman Kodak Company
    Inventors: Krishnan Chari, Paul P. Spara, Sundaram Krishnamurthy
  • Patent number: 5622810
    Abstract: A silver halide color photosensitive material is disclosed, which has on a support at least one photosensitive silver halide emulsion layer, wherein at least one nondiffusible compound represented by the following formula (I) is contained to inhibit generation of color stain and color fog and to ensure excellent keeping quality: ##STR1## wherein R.sup.1 represents an aryl group or a heterocyclic group, R.sup.2 represents an alkyl group, a cycloalkyl group, an alkoxy group or an aryloxy group, R.sup.3 represents an alkyl group, a cycloalkyl group, an aryl group or a heterocyclic group and X represents an oxygen atom or a sulfur atom; provided that R.sup.3 does not represent a phenyl group when R.sup.2 represents a phenoxy group. ##STR2## wherein R'.sup.1 represents an aryl group or a heterocyclic group; A'.sup.1 and A'.sup.2 each represents a hydrogen atom or a hydrolyzable group; X represents an oxygen atom or a sulfur atom; and Y.sup.1 represents atoms completing a phosphorus-containing heterocyclic ring.
    Type: Grant
    Filed: October 18, 1995
    Date of Patent: April 22, 1997
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takashi Nakamura, Hiroshi Fukuzawa, Michio Ono
  • Patent number: 5612174
    Abstract: Disclosed are a photographic yellow dye-forming coupler of formula (I) and a photographic material containing one or more such yellow couplers. ##STR1## wherein R.sub.1 represents an alkyl group, a cycloalkyl group, an aryl group, an alkylamino group, an anilino group, or a heterocyclic group; R.sub.2 represents a hydrogen atom, a halogen atom, an aliphatic-oxy group, an aryloxy group, an aliphatic group, or an amino group; R.sub.3 represents an alkenyl group; R.sub.4 represents a substituent; m represents an integer of from 0 to 3; and X represents a hydrogen atom, or a group capable of being split off from the formula by the coupling reaction with an oxidation product of an aromatic primary amine developing agent. The couplers have a high solubility in solvents, and emulsions containing the couplers can be stored in cool for a long period of time without worsening the coloring property of the couplers.
    Type: Grant
    Filed: December 7, 1995
    Date of Patent: March 18, 1997
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hiroo Takizawa, Yasuhiro Yoshioka, Masakazu Morigaki
  • Patent number: 5601968
    Abstract: A color photographic silver halide material with a support and at least one silver halide emulsion layer applied thereto which contains at least one 2-equivalent pyrazolone magenta coupler of the formula (I) ##STR1## with the substituents having the meanings stated in the specification and at least one amine which contains repeat units of the formulae (II) or (III) ##STR2## with the substituents having the meanings stated in the specification, is distinguished by reduced fogging and color spotting during storage.
    Type: Grant
    Filed: April 18, 1996
    Date of Patent: February 11, 1997
    Assignee: Agfa-Gevaert Aktiengesellschaft
    Inventors: Beate Weber, Hans Langen, Uwe Dahlhaus, Thomas H ubsch
  • Patent number: 5597683
    Abstract: Disclosed is a silver halide color photographic photosensitive material comprising a support, having thereon at least one photosensitive silver halide layer. At least 50% of the total projected area of the silver halide grains in the emulsion layer is accounted for by tabular grains of an aspect ratio at least 2:1, and a compound which can be represented by formula (I) below is in at least one layer.
    Type: Grant
    Filed: May 26, 1994
    Date of Patent: January 28, 1997
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Minoru Uchida, Shunichi Tomita, Toshio Kawagishi
  • Patent number: 5597685
    Abstract: Color photographic element comprising residual magenta coupler scavenger ionizable epoxy compounds in combination with a specific class of image stabilizers are disclosed. Such elements comprise a support bearing thereon: (a) a photosensitive first layer comprising (i) a silver halide emulsion, (ii) a magenta coupler dispersion, and (iii) an image stabilizer of the following formula STG-A: ##STR1## wherein R.sub.1 represents an alkyl group, a cycloalkyl group, an alkenyl phenyl group, an aryl group, a heterocyclic group, an acyl group, a bridged hydrocarbon group, an alkyl sulfonyl group or an aryl sulfonyl group; R.sub.
    Type: Grant
    Filed: April 25, 1995
    Date of Patent: January 28, 1997
    Assignee: Eastman Kodak Company
    Inventors: Krishnan Chari, Wendell F. Smith, Jr.
  • Patent number: 5591569
    Abstract: This invention provides a photographic process and element where the element comprises a support bearing a light-sensitive photographic silver halide layer containing (1) a bicyclic azole coupler, (2) an azopyrazolone masking coupler, and (3) an aromatic electron-rich compound having ring substituents for which the sum of the individual Hammett sigma-para values is more negative than -0.80.
    Type: Grant
    Filed: October 5, 1995
    Date of Patent: January 7, 1997
    Assignee: Eastman Kodak Company
    Inventors: Daniel L. Kapp, Janet Younathan
  • Patent number: 5580710
    Abstract: A silver halide color photographic material excellent in color forming property and wet heat image fastness comprising at least one compound represented by formula (I) in any layer formed on a support: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 independently represent branched chain unsubstituted alkyl groups each having 3 to 20 carbon atoms with the proviso that the total carbon number of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 is 16 to 60.
    Type: Grant
    Filed: September 22, 1995
    Date of Patent: December 3, 1996
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hiroo Takizawa, Yasuhiro Yoshioka, Masakazu Morigaki
  • Patent number: 5576161
    Abstract: A silver halide color photographic material improved in color forming properties and light fastness of color image is disclosed, comprising a support having thereon a light-sensitive silver halide emulsion layer and a nonlight-sensitive layer, wherein the nonlight-sensitive layer contains a UV absorbent and the silver halide emulsion layer contains a polyhydric alcohol.
    Type: Grant
    Filed: July 24, 1995
    Date of Patent: November 19, 1996
    Assignee: Konica Corporation
    Inventors: Motoi Nishimura, Hirokazu Sato, Hiroshi Kita
  • Patent number: 5576159
    Abstract: The invention relates to a photographic element comprising at least one emulsion layer comprising coupler and silver halide grains, adjacent to said at least one emulsion layer a color enhancer layer comprising the same coupler as in said at least one coupler layer and adjacent to said color enhancer layer a Dox scavenging layer.
    Type: Grant
    Filed: February 17, 1995
    Date of Patent: November 19, 1996
    Assignee: Eastman Kodak Company
    Inventors: Erika M. Sato, Paul T. Hahm, Walter H. Isaac
  • Patent number: 5576165
    Abstract: A silver halide color photographic material having improved stability with respect to fog and latent images, which contains at least one compound of formula (A) and at least one polymer having repeating units of formula (I) or (II): ##STR1## wherein R.sub.a1 to R.sub.a5 are as defined in the specification ##STR2## wherein R.sup.1 represents a hydrogen atom or an alkyl group; and Q represents a group selected from the group consisting of groups represented by formulae 1) to 4): ##STR3## (wherein the definitions of each symbols are the same as in the application) ##STR4## wherein E represents --COR.sub.21, --COOR.sub.22, --CONHR.sub.23, --CONHCOR.sub.24 or --SO.sub.2 R.sub.25 (wherein R.sub.21, R.sub.22, R.sub.23, R.sub.24 and R.sub.25 each represents an alkyl, aryl or cycloalkyl group, or a hydrogen atom); and G represents an alkylene group.
    Type: Grant
    Filed: January 17, 1996
    Date of Patent: November 19, 1996
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yasushi Nozawa, Masakazu Morigaki